John myers



JOHN MYERS AND G. EUNSON, .0F NEW YORK, N. Y.

MACHINE FORSAWING THIN BOARDS, &c.

Specication'of Letters Patent No. 10,965, dated May 23, 1854.

To all whom t may concern Be it known that we, JOHN MYERS and` ROBERT Gr. EUNsoN, of the city, county, and State of New York, have invented certain new and 'useful Improvements in Machines fork Sawing Lumber into Thin Stuff for Mirror-Backs, Picture-Frame Backs, cc., and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexeddrawings, making a part of this specification, in which.-d

Figure l, is a .plan or top View of our improved machine. Fig. 2, is a side elevation of ditto. Fig. 3, is a side view of the circular saw, and one of the deflecting plates which covers the upper part of the stiftening plate of the saw. Fig. 4, is a vertical section of the circular saw, deflecting plates,

and guide troughs. The plane of section being through the center of the saw, and transversely with the guide troughs.

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to certain new and useful improvements in machines for saw` ing lumber into thin stuff for mirror and picture frame backs and other purposes for whichA thin stuf is used. n

The nature of the'invention consists, 1st, in the employment, or use, of deflecting Y plates-one or two-placed at the sides o f a circular'saw for the purpose of preventing the sawed stuH from coming in contact with the sides of the saw, and enlarging or expanding the saw kerf, and thereby preventing the stuff from binding against theedge of the saw near its teeth.

the ordinary adjustable and elastic beds be,

,j tween whichthe stuff1 is fed to the saw. The

clamps above mentionedjhave an elasticity independent of the beds, and compensate for of stu The `deflecting` plates also allow the saw to be stiffened by` the vaying thickness of the different pieces to be sawed, by holding firmly the eXtreme end of the stuff, and keeping it in properposition to the saw, however much the elastic beds may be expanded by a suc ceeding piece of stuf of greater thickness.

3d. Our invention consists in the employment or use of knives or cutters secured to the adjustable beds, and so arranged as to cutor smooth off the rough and projecting sides of the stuff at the ends, making it of uniform thickness.

4th. Ourinvention consists in the combination of an adjustable bed and circular saw, arranged as will be hereafter shown.

To enable others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.

A, is a frame, which may b'e constructed in any proper manner.,

B, is a shaft running transversely across the front part of the frame, on which shaft a circular saw, C, is placed.

The saw, C, is formed of thin steel plate, and is such as is used for sawing veneers. On one side of this saw, a circular plate, D, is secured by rivets, or screws, (ci), the plate being somewhatless in diameter than the saw, see Figs. 3 and 4:. The plate, D, stiifens the saw, and without its use, a comparatively much thicker saw would be required.

E, E, are deflecting plates, placed one at each side of the saw. The defiecting plate, E, covers the upper part of the stiffening plate, D, as shown in Figs. 3, and 4, and the inner end does not project outward from the saw, C, quite as far as the outer end, as shown in Fig. 1. The other deflecting plate, FX, on the opposite side of the saw, is rather smaller in diameter than the deflecting plate, E, and projects from the saw, at about an equal distance at both ends.`

F, F, Figs. 1, and 2, are two feed roller beds placed vertically in the back part of `the frame, A, and parallel with each other.

Both of these beds are made adjust-able by means of screw rods, ,(5), which bear against the sides of the beds, the screw rods of each bed being operated simultaneously by means soy of chains, (c), passing around small toothed wheels, (d), see Fig. 2, at the ends of the screw rods, see Fig. 2.

Gr, G, are cranks, one of which is attached to one of the toothed wheels, (d), of each bed. The beds also have a lateral elasticity given them by means of india rubber, or other springs, attached to them in any proper manner.

H, H, H, H, are feed rollers placed in the beds, F, F; two rollers in each bed, see Figs.

J, J, are set screws which pass trans-A versely through the top and bottom pieces of each bed. The inner ends of these set screws bear against india rubber springs, (g), which are placed directly back of the boxes, as shown in Fig. l.

K, K, Fig. l, are india rubber springs at the top of the clamps, one spring to each clamp. These springs are placed between the clamps and set screws, L, L, which pass transversely through the top pieces of the beds, F, F.

M, M, are stops which pass through the top pieces of the beds-one through each top piece. The stops regulate the distance of the lateral vibration of the clamps.

O, O, are knives or cutters placed vertically in the beds, F, F, one knife or cutter in each bed. The top and bottom of the cutters are fitted in slides, (it), (fb), see Fig. l, in which the top slides are shown, which fit in the top and bottom pieces of the beds, and are regulated by set screws, I, I. The cutting edges of the knives or cutters are on a line with the edges of the feed rollers, H. Motion is given the feed rollers, H, by proper gearing, R, at the lower part of the rollers.

Uperation: The beds, F, F, are adjusted relatively to the saw, C, so that the stuff may be sawed intov the desired thicknesses. Either side of the saw may be made the line side, by fixing permanently, or destroying the elasticity of the proper roller bed. The stuff, S, see Fig. l, is placed between the feed rollers, I-I, inthe beds, F, F, and motion being communicated to the saw and feed rollers, the stuff is fed toward the saw, and cut by it; the two pieces being pre vented from bearing against the sides of the saw by means of the deflecting plates, E, E, see Fig. 1.; When the outer end of the stuff has passed the innermost feed roller, the clamps, I, I, bear against the stuff, and hold it in a proper relative position to the saw. A. fresh piece of stuff is now placed between the feed rollers-the latter piece of ustud forcing forward the preceding piece. If the last piece of stuff is rather thicker than the preceding piece, it merely acts upon the beds, and forcesfthe elastic one farther from the permanent one, without effecting the clamps, which have an independent elasticity, owing to the springs, (g), K.

The knives or cutters, O, O, cut, or smooth off, to an equal thickness, the extreme ends of the stuff which is split, and not sawedthe usual practice in saw mills.

f wWe will suppose that the stuff, S', Fig. l, is two inches in thickness, and it is desired to saw it into two strips; one of which is to be one quarter inch in thickness-the one quarter inch strip being the thinnest, may be deflected by the plate, E, as it is inclined, or projects outward from the same, farther than the plate, E. The roller bed, in line with the deflecting plate, E, is permanently fixed at one quarter of an inch from the side of thesaw. The opposite bed being elastic, the side of the saw on which the thin strip passes, is the line side. The opposite of the saw may be made the line side, by permanently fixing the opposite roller bed, and allowing the other one to remain elastic.

By the above improvements, we are en abled, 1st, to employ a thin veneer saw, and consequently, a small amount of stuff is lost, as the saw kerf is narrow. This is an object in saving thin stuff. 2d, the stuff to be sawed is always kept in a proper relative position to the saw when varying in thickness, and the ends of each piece of stuff is smoother, or reduced to an equal thickness, before it `leaves the feed rollers.

1We do not claim the adjustable and elastic roller beds, F, F, for they have been previously used. But what we claim as new, and desire to secure by Letters Patent, is

l. The employment or use of the deflecting plates, E, E,one or both placed at the sides of the saw, as herein shown, for the purpose of preventing the sawed stuff from bearing against the sides of the saw, and expanding the saw kerf, and also for the purpose of allowing a thin veneer saw to be stiifened by plates, D, one or two, as desired.

2. We claim the employment, oruse, of the clamps, I, I, arranged as herein shown, or in an equivalent way, so as to have a lateral elastic movement independent of the roller beds, to which said clamps are attached, .for the purpose of compensating for the varying thickness of different pieces of stuff, and keeping them in a proper relative position to the saw.

3. "We claim the knives, or cutters, O, O,

placed in the roller beds, F, F, and arranged substantially, as herein shown and described, and for the purpose as set forth.

4. We claim the employment of an adjustable bed, F, with clamps, as described, in combination with the saw, C, when the saw has a stifening plate, E, in line with said bed, by Which the stiened, or rounded, side of the saw, is made the line side.

JOHN MYERS. ROBERT G. EUNSON. Witnesses:

S. H. WALES, JN0. W. HAMILTON.

` Disclaimer.

`To the Gommissz'one lof Ptnts: v

The petition oflE CENE S EUNsoN an JOHN -MYExs,' deceased, both-r f'the A"city,

of the United-L Stfes, bear-ing; date fon l that.

deyf-nd, numlznaredy l10,2965 ffor La.' certain new 'and 'usefulre-saiwing gnaine,

tieners are the jointandexlufiveownrs of said LetterPatent'fwithin and throughout the wholeof the United States and the Ter ritorlesythereof,V as they 've1fi1yb,elieve`.-tht

through inndvertencggacidentand I'I'Alis'iqaln;V

`and,witliont anyY fragudlent-:r d eqeptiveintention the.` 'said patentees 'bayer-claimed 4more tii c1aim of sai LettersPatent is.; too broa-,din- "that" 1tV Includes that which y'mrI petitionersdenominated fof 'the invention consists," ip loyment or use of deeoting: plates-Ji one l l your petitioners have reasontobelieve, that` or two Placed at the des of" a' circular claim of said Letters Patent which covers the em loyment or." use' of the: deilectng plate, at vthe side of the saw, thereby causing the sad'oleim to include only the combinationl of the saw described l with -both both of seid' detlecting p etes are used'at one and the saines` time in thejmanner and for the purposes'descriy ed in said paten`t. 'Tlxe said 'first :claim `of seid Letters Patent will accordingly be s follows:

loyment or .use of the -defiectl. The em `ing plates,fl*l;A both 1}` la.t:e.d rat the sides of the sewz` asherein shown, for the purpose of preventing the sawed "stuff from bearing egeinst the sides of the sew, andfexpandln'g the saw kerf, and' also for thepurpose of Aal lowing'athn. venerfsaw to be stlfened by plates;v D., one-or two, :ls-desired. `Your petitioners also deslre that part of {seid petentee I,destripti on of theirV mventionuwherein the saythe nature t; inisthe ennjsaw, &c., and tolimiti thenature'of thefin- This disclaimer to operate .to tlie; entent- 2 o f, the interest inY eaid Batntavested l l V t A 4 4 in yourpetitioners, wlioheye aldten-:dol- Y o}1r 'Ptitiprillzherefore, 'hereby mw the- T'easul'ry Qfthe then" ldlslmf t0'. tlm Partr @i #he jrst msuch case 'made and previded;

A y to ,the requirements .off the' act of 

